This paper describes the creation of the Allobrain project, an interactive, stereographic, 3D audio, immersive virtual world constructed from fMRI brain data and installed in the Allosphere, one of the largest virtual reality spaces in existence. This paper portrays the role the Allobrain project played as an artwork driving the technological infrastructure of the Allosphere. The construction o...

The paper outlines a normative approach to the design of distributed applications that must consistently integrate a number of environments (i.e. form-based interfaces, 3D Virtual Worlds, physical world). The application of the described ideas is illustrated on the example of a fish market, which is an application that can simultaneously be accessed by the people from the physical world, people...

Today, immersive environments mainly use a few 3D positions given by trackers to align the real and virtual worlds. In this paper we present an alternative approach using commodity components to achieve real time marker-less 3D modeling in virtual reality environments. The goal is to compute in real time a 3D shape of the objects and users present in the interaction space without having to equi...

Virtual worlds exploration techniques are used in a wide variety of domains — from graph drawing to robot motion. This paper is dedicated to virtual world exploration techniques which have to help a human being to understand a 3D scene. An improved method of a viewpoint quality estimation is presented in the paper, together with a new method for an automatic 3D scene exploration, based on a vir...

Permission to make digital/hard copies of all or part of this material for personal or classroom use is granted without fee provided that the copies are not made or distributed for profit or commercial advantage , the copyright notice, the title of the publication an its date appear, and notice is given that Abstract VRML —the Virtual Reality Modeling Language— has established as the standard d...

Electronic Institutions are regulated environments populated by autonomous software agents that perform tasks on behalf of users. 3D Electronic Institutions extend EI with 3D Virtual Worlds, which provide an inmersive user interface so that humans can observe their agents’ behaviors. In this manner, they represent a virtual analogy to real institutions. We propose to gain on realism on this ana...

In this paper we propose an algorithm for automatic transformation of a graph into a 3D Virtual World and its Euclidean map, using the rectangular dualization technique. The nodes of the initial graph are transformed into rooms, the connecting arcs between nodes determine which rooms have to be placed next to each other and define the positions of the doors connecting those rooms. The proposed ...

Modern desktop PCs are capable of taking 2D Geographic Information System (GIS) applications into the realm of interactive 3D virtual worlds. In prior work we developed and presented graphics algorithms and data management methods for interactive viewing of a 3D global terrain system for desktop and virtual reality systems. In this paper we present a key data structure and associated render-tim...